Wrench



---(No ModelL) G. W. BUPF ORD. WRENCH.

Patented Jan; 10-, 1893.

NITED STATES PATENT OFFICE.

GEORGE W. BUFFORD, OF ITHAOA, NEW YORK.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 489,454, dated January10, 1893.

Application filed April 21, 1892. Serial No. 429v986- (N0 model.)

To all whom it may concern.-

Be it known that I, GEORGE W. BUFFORD, of Ithaca, in the county ofTompkins and State of New York, have invented a new and usefulImprovement in Wrenches, of which the following is a specification.

My invention relates to an improvementin pipe wrenches in which anadjustable jaw is secured to a handle and under the control of a singlescrew seated in the handle to be thrust in directions toward and awayfrom a stationary jaw.

My invention further contemplates a sectional handle, the parts of whichmay be either detachably or permanently secured together to hold theadjustable jaw and its adjusting screw assembled.

A practical embodiment of my invention is represented in theaccompanying drawings in which Figure l is a view of the wrench in sideelevation. 'Fig. 2 is a longitudinal section through the handle fromside to side, and Fig. 3 is a partial view in side elevation of amodified form of movable jaw.

The handle is shown in the present instance as formed of two halfsections A and A separated from front to back and held togetherby screwsB. To lock the sections against longitudinal displacement, I provide onewith a recess a and the other with a tongue orprojection a, adapted tofit within the recess a when the two sections are brought snuglytogether.

The socket C for the reception of the shank d of the movable jaw D, isformed in the adjacent faces of the sections A and A, and, as a matterof preference, I form said opening about half in one section and half inthe other, and thicken the sections. in the neighborhood of said openingin order to maintain the desired strength.

A short distance from the socket G, I provide a screw threaded socket cfor the reception of an adjusting screw E. The length of the screw Ecorresponds to the distance between two abutments cl and d on the shankof the movable jaw and when the parts are assembled, the said adjustingscrew occupies a position between said abutments, with its head inproximity to one and its point in proximity to the other. The movablejaw D has its biting face set at right angles or somewhat oblique to theshank d and the stationary jaw is formed by beveling the end of thehandle, as shown at a In the form shown in Fig. 3, the shank d isprovided with a second gripping jaw D, at its opposite end from the jawD and extending in the opposite direction from the shank. When the jaw Dbecomes worn, the shank may be reversed in its socket and the jaw Dbrought into use.

To assemble the parts, the shank of the adjustable jaw is placed in itssocket in one of the sections A or A, the screw E is then placed inposition in its part socket and between its abutments, and the other ofthe sections A or A is then placed in position and secured to thesection in which the parts were placed. When the sections A and A havebeen secured together, the movable jaw and the adjusting screw are bothlocked to the handie. By turning the screw E in one direction or theother, the movable jaw may be caused to approach or recede from thestationary jaw as may be desired.

It is obvious that rivets might be employed in the place of the screws Bto permanently secure the sections A and A together, and also that thesections Aand A might be other than half sections.

What I claim is:

1. In combination, a handle provided with a stationary jaw, a movablejaw seated in the handle and provided on its shank with abutments spacedapart and facing one another and an adjusting screw having an engagementat its opposite ends with the abutments on the shank of the movable jawto thrust it in opposite directions, substantially as set forth. I

2. In combination, a handle having a stationary jaw, a reversiblemovable jaw seated in the handle and provided with abutments on itsshank and a screw having an engagement with the handle and with theabutments for adjusting the movable jaw, substantially as set forth.

GEORGE W. BUFFORD.

Witnesses:

H. P. J OHNSON, G. H. SLOCUM.

